PAC RP4-GM31 User manual

Brand: PAC

Model: RP4-GM31

Type: User manual

Radio Replacement and Steering Wheel Control Interface

for Select General Motors Vehicles

RP4-GM31

PAC-audio.com

Pacific Accessory Corporation

Page 1

Rev: 3

Date: 120618

Introduction and Features

Important Notes

Wiring Connection Chart

Illustration / Schematic

The RP4-GM31 interface allows the replacement of a factory radio in select General Motors vehicles with 29-bit LAN

radios. Using this interface will retain factory features such as steering wheel controls (SWC), Warning Chimes, Rear

Seat Controls (RSC) and the BOSE amplier when the original radio is removed. Use of this interface also allows you

to program two radio functions to each SWC button, by using short press / long press dual command functionality.

The RP4-GM31 also provides data bus driven outputs such as retained accessory power (RAP), vehicle speed sensor

(VSS), illumination, reverse trigger and parking brake.

1. These instructions only apply to R.1.2.3a.8 or later revisions. The revision info can be found on a small white sticker on

the interface and packaging.

2. The radio select rotary switch on the side of the interface, must be adjusted to the proper radio setting before plugging

the interface into the vehicle (see below for setting chart).

3. The interface comes pre-programmed for all of the vehicle’s factory SWC functions and does not require programming,

unless you wish to re-assign the SWC functions or utilize short press / long press dual command functionality. The SWC

can always be restored to default settings by pressing and releasing the program button on the side of the interface

once, and waiting 7 seconds for the LED to ash 4 times.

4. RSC buttons that are identical to the SWC will mimic the SWC one for one.

5. To prevent over driven audio when installing into a vehicle with a Bose system and the aftermarket radio does not have

low level outputs, a 4 channel or two 2 channel LOC’s are recommended to match the input voltage. We recommend the

LP5-4 or two LP5-2 or any other LOC that have the same characteristics as the LP5-4 or LP5-2.

6. To prevent ground loop or engine noise when installing aftermarket radios that use a common ground on the RCA

outputs, a pair of ground loop isolators (part # SNI-1 or LPGL-2) are required.

7. The LED will ash whenever a SWC button is pressed.

Interface Connector

See above chart for

wire color descriptions.

Vehicle Connector

See above chart for

wire color description.

SWC Connection

See above chart for

different radio type

connections

Acc On/

Programming

LED

Programming

Button

Wiring SWC Connection

Light Green Parking Brake Output (-)

Pink Vehicle Speed Output

Blue / White Amp Turn On Input

Red

Accessory Output

(10 amp)

Orange / White Illumination Output (+)

Purple / White

Reverse Output (+)

Interface Connector

Yellow Battery +12v

Black Ground

Blue Antenna On Input

White Front Left + input

White / Black Front Left - input

Gray Front Right + input

Gray / Black Front Right - input

Green Rear Left + input

Green / Black Rear Left - input

Purple Rear Right + input

Purple / Black Rear Right - input

Vehicle Connector

SWC Connector

Blue / Yellow

Kenwood,

Newer JVC

3.5mm Jack

Alpine, JVC, Clarion,

Fusion, Pioneer,

Sony, Boyo, Dual,

Lightning Audio,

Visteon or Advent

Radio Replacement and Steering Wheel Control Interface

for Select General Motors Vehicles

RP4-GM31

PAC-audio.com

Pacific Accessory Corporation

Page 2

Rev: 3

Date: 120618

Installation Steps

1. The radio select rotary switch on the side of the interface must be adjusted to the proper radio setting before

plugging the interface into the vehicle.

2. Make all connections as described in the chart on page 1.

If there is a Bose® Audio system present: Connect the RCA inputs to the aftermarket radios pre-amp output. The audio

level will vary depending on the new radios pre-amp output voltage (2 - 4 volts is recommended).

If there is not a Bose® Audio system present: Cut the RCA inputs off and connect the aftermarket radios speaker outputs

to the remaining wire according to the chart on page 1.

3. Connect the SWC wire according to the chart on page 1 (aftermarket radio MUST support a wired remote input).

4. If you wish to reassign functions to the SWC, follow the programming instructions discussed later on this page.

Alpine JVC Kenwood Clarion Pioneer Sony Fusion

Volume +

Volume + Volume + Volume + Volume + Volume + Volume + Volume +

Volume -

Volume - Volume - Volume - Volume - Volume - Volume - Volume -

Source

Source Source Source Source Source Source Source

Track +

Track + Track + Track + Search + Track + Track + Track +

Track -

Track - Track - Track - Search - Track - Track - Track -

Answer/Voice

Receive Receive Receive Receive Receive Answer/End N/P

Mute/End

Mute/End Mute/End Mute/End Mute/End Mute/End Mute/End Mute/End

Default SWC Button Assignments

IMPORTANT! The interface comes pre-programmed for the functions listed in the chart below and does not require programming

unless you wish to re-assign the SWC functions to different buttons. The SWC can always be restored to default settings by

pressing the program button on the side of the interface once and waiting for the timeout.

Default Steering Wheel Control Programming

Optional Steering Wheel Control Programming

*Other - Dual / Axxera, Jensen, Rockford Fosgate

SET RADIO SELECT SWITCH

If you wish to re-assign the SWC functions or utilize short press long press dual command functionality, the interface must be

programmed in the specic order shown on the chart below. If you come across a function in the chart that your steering wheel

does not have, or you do not want to program, press and release the programming button on the side of the interface to skip that

function. The LED will ash off, and on conrming that you have successfully skipped that function and are ready to proceed to

the next one.

Short Press Long Press Dual Command Functionality

This feature allows you to assign two aftermarket radio functions to each of the vehicles SWC buttons. It can be used with as

many of the buttons as the user likes or none at all. When this functionality is implemented, quickly pressing and releasing a SWC

button will initiate the short press command while pressing and holding a SWC button for longer than two seconds, will initiate the

long press command. Please note that no long press commands are programmed by default. If you wish to assign dual command

functionality to the SWC, please follow the programming steps on the next page.

Alpine JVC

Kenwood /

Lightning Audio

Clarion /

Nakamichi

Pioneer /

Other*

Sony Fusion

1 2 3 4 7 8 9

Radio Replacement and Steering Wheel Control Interface

for Select General Motors Vehicles

RP4-GM31

PAC-audio.com

Pacific Accessory Corporation

Page 3

Rev: 3

Date: 120618

Optional Steering Wheel Control Programming (cont.)

Alpine JVC Kenwood Clarion Other * Pioneer Sony Fusion

1 Volume + Volume + Volume + Volume + Volume + Volume + Volume + Volume +

2 Volume - Volume - Volume - Volume - Volume - Volume - Volume - Volume -

3 Mute Mute

4 Preset + Source Source Source Preset + Preset + Preset + Source

5 Preset - Track + Play Search + Preset - Preset - Preset - Track +

6 Source Track - Track + Search - Source Source Source Track -

7 Track + Band / Disc + Track - Band Track + Track + Track + Audio

8 Track - Preset / Disc - Disc / FM + Send / End Track - Track - Track - Power

9 Power Select Disc / AM - Send Band Band Band

10 Enter / Play Attenuation Answer End Answer ** Phone Menu Reject / Source

11 Band / Program Phone Receive

llaC dnE** TTPkooH nOtcejeR enohPevieceR21

kooH ffOlaiD ecioVdnE31

14 Power Mute

+ teserP51

* Advent, Boyo, Dual, Jensen, Rockford Fosgate & Visteon ** Jensen & Advent ONLY

AT T Mute Mute Mute Mute Mute

Voice

Voice End** Answer Call Answer / End Call

Voice

Optional Programming Order

Programming the SWC assignments

1. Turn the key to the ignition position.

2. Press and release programming button on the side of the interface.

3. Within 7 seconds, press the button that is to be learned on the steering wheel. The LED will turn off when the button is

pressed. At this point you have two options:

A. For short press functionality: Release the button within 1.5 seconds. The LED will turn back on.

B. For long press functionality: Hold the button until the LED starts blinking. Release the button and the LED

will go back to solid.

4. If you need to program more buttons, repeat step 3 for each additional audio function on the steering wheel.

5. If you come across a function in the chart that your steering wheel does not have, or you do not want to program, press and

release the program button on the side of the interface to skip that function.

6. Once programming is completed, wait seven seconds. The LED will ash three times, indicating end of programming.

7. Test the interface for proper functionality. Whenever a SWC is pressed the LED on the interface should blink. If any function

does not work, repeat the programming steps

Testing and Verication

1. Turn the ignition on. The LED on the interface will turn on and the +12v accessory wire will turn on.

2. Turn on the radio, and check balance and fade. Note: Premium Factory amplied Systems will not fade, as neither the aftermarket radio,

nor the RP interface have the ability to control the amplier’s fader.

3. Verify that the factory subwoofer (if present) is playing.

4. Verify that all SWC are functioning properly.

5. Turn off vehicle and remove key. RAP will be active and keep the radio on for 10 minutes, or until the driver’s door is opened.

6. The LED and radio will turn off when RAP turns off, or the driver’s door is opened.

Rear Seat Entertainment (RSE); If equipped

1. Vehicles equipped with an overhead screen only: In this application, the GMRVD must be used in order to feed A/V into the factory

screen from an aftermarket head unit (head unit must support A/V out). With the GMRVD, A/V will be passed from the aftermarket head

unit to the rear screen, and audio can be heard through the headphones. The GMRVD will also pass the Auxiliary inputs on the rear of the

center console, to the aftermarket head unit.

2. Vehicles equipped with an overhead screen AND headrest monitors: In this application, the headrest monitors will function

independently from the overhead monitor. Neither video or audio, can be passed to or from the headrest monitors. The overhead monitor

will function exactly as described in note 1.

Technical Support and Product Updates (Firmware)

The RP4-GM31 can be updated with new rmware as it becomes available using the PAC-UP interface updater (sold separately). Please visit

www.PAC-audio.com/rmware for available updates.

Technical Support

support@PAC-audio.com

727-592-5991

PAC RP4-GM31 User manual

PAC RP4-GM31 User manual

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